Profile cutter-head.



. F. L. LANE.

PROFILE CUTTER HEAD.

APPLICATION FILED MAR. 31. HHS.

1,287,053. Patented Dec. 10, 1918.

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Arnr onnion.

FRANKLIN L. LANE, OF BELOIT, WISCONSIN, ASSSIGNOR TO P. B. YATES MACHINECOMPANY, OIE BELOIT, WISCONSIN, A CORPORATION OF WISCONSIN.

. IPROFILE CUTTER-HEAD.

Specification of Letters Patent. Patgnted Dec. 1(), 1918.

Original application file d. September 20, 1915, Serial No. 51,540.Divided and this application filed March 31,

1916. Serial No. 87,907.

To all whom it may concern:

Be it known that I, Fnniznmr L. LANE, a citizen of the United States,residing at Eeloit, in the county of Rock and State of Wisconsin, haveinvented certain new and useful Improvements in Profile Cutterileads, ofwhich the following is a specification, the same being a division of myapplication Serial No. 51,5a0, filed September 20, 1915.

The invention has for its object the provision of improved means forsecuring the knives in place on the body of the head without undulyweakening the knife andin such manner as to increase the extent to whichthe knives may be ground down thus lengthening their lives.

In order that the invention may be readily understood I have in theaccompanying drawings and in the following detailed description basedthereon set forth a preferred embodiment of the same. As, however, theinvention is susceptible of embodiment in other and variedconstructional forms without departure from the essence or spiritthereof, it will be understood thatthe drawing and description are to betaken in an illustrative and not in an unnecessarily limiting sense. Inthe drawings- Figure 1 is a longitudinal section through a cutter headembodying the invention;

Fig. 2 is a transverse section on the line their outer faceslongitudinally scored for.

cooperative engagement with the "correspondingly scored faces 14 of thetool bodies 15.

Each of the head projections 13 is provided with an undercut channel orT-slot 16 forming a. throughway extending parallel to the plane ofrotation of the head and to a line tangent to the peripherythereof,tl1es'e slots extending entirely through the project1on 13 andbeing openat both ends tothe space between the adjacent projections. Thetool or knife 15 has a bolt aperture 17 and in register therewith asurface recess '18. A bolt 19 is adapted to be seated within the T-slot16 with its head lying within the under-cut portion 16, the shank of thebolt extending upwardly through the aperture 17 into the recess 18 andreceiving a nut 20 which is seated within the recess. 7

It will be readily understood that the provision of the undercut T-slot16 extending parallel to the plane of rotation of the head enables theknife 15 to be adjusted forward and backward in the operation ofjointing the knives and to be gradually advanced to compensate for thewearing away. and the grinding of the knife edge, the bolt travelingwith the knife and the head of the bolt sliding within the slot 16. Thisarrangement has manifest advantages over. the old method of fixing thebolt in the cutter head and providing the knife with a slot whichtravels upon the bolt, the provision of an aperture instead of a slot inthe'knife enabling the knife to be sharpened a great many more times andalso weakening the knife less than if the same were provided with anextensive slot.

The knives having been adjusted upon the head and preliminarily securedin position by means of the bolt 19, they are shown as bolt 27 istightened it will serve to draw the clamp 23 inward, and the cooperationof the lip 26 with the inclined wall 22 will draw the clamp radiallyinward. thus clamping the knife against the cutter head.

The clamps 23 may be dispensed with entirely, the employment of one ormore bolts 7 I 19 engaging a corresponding number of parallel spacedT-slots 16, being suflicient to firmly hold each of the tools in placeon the head.

V I claim: e

1. The combination with a rotary tool head having an undercutslotextending parallel to the plane of rotation and open at the end, ofatool carried by said head and having an aperture extending radially ofthe head, and abolt arranged in the aperture of the tool with its .headWithin the undercut slot, whereby to permit adjustment of the tool inthe planeof rotation of the head. e I

2. The combination with a rotary tool head having undercut slots orchannels forming throughways extending parallel to the plane ofrotation, of tools carried by said head and having apertures extendingradially of the head, and bolts arranged in the apertures of the toolswith their heads Within the undercut slots, whereby to permit ofadjustment of the tool in the plane of rotation of the head. i v

3. The combination With a rotary tool head having undercut slotsextending parallel to the plane of rotation and open at the end, oftools carried by said head and having apertures extending radially ofthe head, and bolts arranged in the apertures of the tools With theirheads Within the undercut slots, and supplemental clamping meansoverlying the tool ends and engaging the end of the head.

In testimony whereof I have hereunto signed my name in the presence oftwo subscribing Witnesses.

FRANKLIN L. LANE.

Copies of this patent may be obtained for five cents each, byaddressingthe Commissioner of Patents.

' Washington, D. C.

